/*
* File: CFdEventSelect.h
* Copyright (c) 2010. Silviu Caragea <silviu@intelliproject.net>
* Created on September 9, 2010, 12:37 AM
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*  1.Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*  2.Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*  3.All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*       This product includes software developed by the University of
*       California, Berkeley and its contributors.
*  4.Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef CFDEVENTSELECT_H
#define	CFDEVENTSELECT_H

#include "../IFdEventInterface.h"

#ifdef USE_SELECT

#ifdef HAVE_SYS_SELECT_H
   #include <sys/select.h>
#endif

/*
    http://www.cl.cam.ac.uk/cgi-bin/manpage?2+select
    http://linux.die.net/man/3/select
*/

namespace litevent
{

const struct EventMothodSignature sigSelect =
{
    "select",
    EnumEventHandlerTypeSelect
};

class CFdEventSelect : public IFdEventInterface
{

public:
    
    explicit CFdEventSelect(size_t maxfds);
    ~CFdEventSelect();

    int reset();
    
protected:
    int poll(int timeoutMs);
    int getEventRevent(size_t node);
    int getEventFileDescriptor(size_t node);

    int setEvent(int fd_node , int fd, int events);
    int deleteEvent(int fd_node, int fd );
    int getEventNextFileDescriptor(int node);

private:

    fd_set selectRead;
    fd_set selectWrite;
    fd_set selectError;

    fd_set selectSetRead;
    fd_set selectSetWrite;
    fd_set selectSetError;

    int selectMaxFd;

    DISALLOW_IMPLICIT_CONSTRUCTORS(CFdEventSelect);
};

inline CFdEventSelect::CFdEventSelect(size_t maxfds):IFdEventInterface(maxfds)
{
    this->reset();
};

inline CFdEventSelect::~CFdEventSelect(){};

}

#endif

#endif	/* CFDEVENTSELECT_H */

